The fracture toughness of hot-pressed NbCr2alloys doped by rare earth yttrium

S. Q. Lu; H. Z. Zheng; Mingwang Fu

doi:10.1016/j.scriptamat.2009.03.049

The fracture toughness of hot-pressed NbCr₂alloys doped by rare earth yttrium

S. Q. Lu, H. Z. Zheng, Mingwang Fu

Research output: Journal article publication › Journal article › Academic research › peer-review

25 Citations (Scopus)

Abstract

NbCr2Laves phase alloys doped by rare earth yttrium were fabricated by mechanical alloying and hot pressing. The effect of yttrium addition content on the fracture toughness of these alloys was investigated. The experimental results show that a minor addition of yttrium can refine the microstructure and toughen NbCr2Laves phase. When the content of yttrium in NbCr2is about 0.1 wt.%, the fracture toughness value is increased by about 20%, which is 4 times higher than that of the cast alloy (1.2 MPa m1/2).

Original language	English
Pages (from-to)	205-207
Number of pages	3
Journal	Scripta Materialia
Volume	61
Issue number	2
DOIs	https://doi.org/10.1016/j.scriptamat.2009.03.049
Publication status	Published - 1 Jul 2009

Keywords

Fracture toughness
Microstructure analysis
NbCr Laves phase alloy 2
Rare earth element yttrium

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

More information

10.1016/j.scriptamat.2009.03.049

Cite this

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title = "The fracture toughness of hot-pressed NbCr2alloys doped by rare earth yttrium",

abstract = "NbCr2Laves phase alloys doped by rare earth yttrium were fabricated by mechanical alloying and hot pressing. The effect of yttrium addition content on the fracture toughness of these alloys was investigated. The experimental results show that a minor addition of yttrium can refine the microstructure and toughen NbCr2Laves phase. When the content of yttrium in NbCr2is about 0.1 wt.%, the fracture toughness value is increased by about 20%, which is 4 times higher than that of the cast alloy (1.2 MPa m1/2).",

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N2 - NbCr2Laves phase alloys doped by rare earth yttrium were fabricated by mechanical alloying and hot pressing. The effect of yttrium addition content on the fracture toughness of these alloys was investigated. The experimental results show that a minor addition of yttrium can refine the microstructure and toughen NbCr2Laves phase. When the content of yttrium in NbCr2is about 0.1 wt.%, the fracture toughness value is increased by about 20%, which is 4 times higher than that of the cast alloy (1.2 MPa m1/2).

AB - NbCr2Laves phase alloys doped by rare earth yttrium were fabricated by mechanical alloying and hot pressing. The effect of yttrium addition content on the fracture toughness of these alloys was investigated. The experimental results show that a minor addition of yttrium can refine the microstructure and toughen NbCr2Laves phase. When the content of yttrium in NbCr2is about 0.1 wt.%, the fracture toughness value is increased by about 20%, which is 4 times higher than that of the cast alloy (1.2 MPa m1/2).

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KW - Microstructure analysis

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KW - Rare earth element yttrium

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